Improvement in horseshoes



'i UNITED STATES HARRISON ARMSTRONG, OF SPARTA, WISCONSIN.

IMPROVEMENT IN .HO RSESHOES.

Specification forming part of' Letters Patent No. 55,220, dated June 5, 1866.

To all whom t may concern' Be it known that I, HARRIsON ARMSTRONG, of Sparta, in the county of' Monroe and State of Wisconsin, haveinvented a new and useful lImprovement in Horseshoes, and I do hereby declare that the following is affull, clear, and exact description thereof', which will enable others skilled in the art to ma-ke and use the saine, reference heilig had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a sectional elevation, taken on the line x of Fig. 2, of a horseshoe made aeeording' to my invention and Ot' the swage used in the process. Fig. f. is a plan Otl a horseshoe. Fig. 3 is a detailed View of a calk ready to be welded Onto a shoe. Fig. 4 is a short piece of a steel bar made according to my invention for forming toe-calks for horseshoes.

The invention consists in an improved method of making toe-calks for horseshoes.

The calks are prepared in blank by rolling out a bar of steel into proper form, with one edge sharp and with a ledge on the angular side of the bar. The bar is divided into sections or divisions, each ot' which is to be ot' a suitablelength for atoe-cal k. A spur is formed on the base thereof bydriving a portion of the ledge downward. This -spur is to be let into a depression made for it in the shoe. When the shoe and the calk are heated they are placed together in a swage of the proper form -to weld the calk and leave it sharp.

The material for the toe-calk is prepared in bars of any suitable length, consisting of steel bars `rolled outV to the shape seen in Fig. 4, which is a short piece of such a bar. It has two sides straight and at right angles to each other-to wit., that whichanswers to the outi side of the calk and that which answers to its bottom, which comes next to the shoes. The inner side is angular from the top, which is left sharp, down to a ledge or base, o, which extends all along the bar, and which itself declines at an angle until it reaches its lower edge.

The bar F (seen in Fig. 4) is divided into sections of asuitable length for toe-calks, and a spur, D, is punched down from the ledge O at the middle ot its length, as seen in Fig. 3, where B designates a section of the bar F of suitable length for the toe-calk ot a horseshoe. The shoe O has a depression made lin it at a suitable place to receive the spur D, so that the two can be fitted together for welding. When the toe-calk B and the shoe are heated they are tted together by means ot' the spur D, and are then placed in the swage A and welded.

The spur in thel center of the calk does not weaken or disfigure the shoe, as is doneby the present mode ot' weldingand sharpening calks.

It will be observed that by my process the calksare not required to be sharpened up after welding, and that in the act ot' welding a ledge or base is formed along the inner line and ends of the cork, where it and the shoe are joined to each other.

I claim as new and desire to secure by Letters Patent-'- Forming a spur on the calk by driving a portion ot'v the ledge downward, substantially as and for the purpose described.

HARRISON ARMSTRONG.

Witnesses M. A. THAYER, S. B. HAMILTON. 

